Fluid motor



Aug. 1d 1926.

T. R. BEGGS KFLUID MOTOR FiidwJune y4, 1924 She tad-Sheet l.l

lll.

WI'TNESSES ATTORNEY T. R. BEGGS FLUID MOTOR Aug. 10,1926.

Filed June 4, 1924v 4 Sheets-Sheet 2 WITNESSES Aug. 1o', 1926.

T. R. BEGGS FLUID MOTOR 'Filed Jun'e 4. 1924 4 sheets-sheet s lNvENToATTORNEY 4 Sheets-Sheet 4 ATTORNEY Aug. 1o 1926 T. R. BEGGS FLUID MOTORFiled June 4, 1924 INVENTOR)v i n A AW, Qu mm m www WITNESSES Patentedug. 10, 1926.

NETE@ inane earsui" ottica..

FLUID MOTOR.

Application filed June 4, 1924. Serial No. 717,752.

small difference in pressure is necessary for its operation, so that itis particularly adapted to be actuated by pressure generated by the riseand fall of t-lie tide, through the medium of a specially constructedapparatus disclosed in my copending applica tion, Serial Number 717,753, filed of even date herewith. The fundamental principle of theinvention is equally well adapted tobe utilized for operation by steampressure.

lVith the above and other `objects in view, which will be more fullyexplained hereinafter, the invention consists in certain de tails ofconstruction and combinations ofV elements, the preferred arrangement ofwhich is illustrated in the accompanying drawings.

In. the drawings:

Figure 1 is an elevation of t-he invention as viewed from one end.

Figure 2 is'an elevation as viewed from the opposite end.

Figure 3 is a side elevation. of the invention, with the inletandexhaust passages shown in cross section.

.Figure l is a vertical section taken substantially in the plane ofthe'motor shaft.

Figure 5 is a fragmentary sectional view, illustrating one of the vanesand its relation to the motor shaft.

Figure 6 is a fragmentary sectional view of one of the vanes, and themeans for supporting and shifting the same.

Figure 7 guided.

Figure 8 is a detail view of the other cam track by which the vanes areguided.

Figure 9 is a section taken transversely of the motor cylinder,illustrating the various distinctive positions assumed by the vanesduring the operation of the motor..

is a'detail view of one of the cam tracks by means of which the vanesare.

Figure 10 is a fragmentary sectional view illustrating how the cylinderheads are supported for rotation.

Figure 11 is a vertical longitudinal section showing a modified form ofthe invention., especially adapted for operation by steam.

Figure 12 is a detail view in elevation of one of the cylinder headsshown in Figure 11.

Figure 13 is a similar view of the opposite cylinder head.

The invention, as illustrated in Figures 1 to 10, inclusive, comprises acylindrical housing 15 formed with a suitable base 16 by which it issupported. Secured to one end ofthe housing 15 is a. flanged retainingring 17, the interior of which forms a cam track, as illustrated inFigure 8, for a pur pose which will subsequently be explained. A similarflanged retaining ring 18 is secured to the opposite end of thecylinder, and its interior forms a cam track of different shape, asillustrated in Figure 7. TheV main shaft 19 of the motor is sup portedcentrally of cylinder heads 2O and 21, which are rotatably mounted inball bearings 22 within opposite ends of the cylinder 15, and aresecured to a central drum 23, which is keyed to the shaft 1). The motorshaft 19 may be provided with a pulley 24, or other suitable device, fortransmitting power.

' he drum 23 is inthe shape of a cylinder, concentric with and ofsmaller diameter than the cylindrical housing 15 and hassemi-cylindrical .recesses 25 formed diametrically opposite each other.Two shafts 26 are rotatably mounted in the cylinder heads 2O and 21,axially of the respective recesses 25. A vane 27 is keyed to each shaft26, andheld against endwise movement by ball Vbearings 28. Each .of theshafts 26 is provided at one end with a cross head 29 having rollers 30,which are guided o n the cani track 18, and has at its other end acrossiead 31 provided with rollers 32, which ride on the cam track 17. Duringa portion of the revolution of the vane about the axis of the cylinder,the vane is disposed radially of thecylinder, and its side edges are iiicontact with the bottom of the recess 25 and the inner surface of thecylindrical housing 15, respectively, so that it presents a surface Cilagainst which the incoming fluid n act. During the remainino` portionolf its revolution, the vane is disposed in the position shown in Figurein which one oft its convex faces forms a continuation ot thecylindrical surface of the drum 23.

'fees 3 and 9, the cylinis termed at one side with extending troni endto end and preteral'ily oit considen i itlier one ot these ports may ethe inlet port and the other' the exhaust port, since the operation otthe motor is e in whichever direction it ,i iuits 35 and are connectedrinsing 15, so as to provide passageconnecting the ports 33 and 3e to 'l,ource ot pressure. .'llie presp ssageways and may he either above obelow atmospheric pressure, long the said pressures are ditterent. ipartition 37 se)L irates the ports and 3e, and extends radially acrossthe annular space between the inner surtace ot the housing 15 and thesurface ot the drum 23.

rllhe operation ot the invention will loe liest understood from aconsideration ot Figures 7 and 3, taken in connection with Figure t,wherein several positions'ot the parts 27, 30 and are indicated bydotted lines. As each sha-tt 26 passes the partition 3T, the rollers aretravelling along the portion a ot the cam track 17, and one or. therollers 3) is travelling along the portion ce of the cam track 18. Thus,as the vane 27 passes the partition 37, it is disposed tangentially otthe drum 23, so as to permit compresse-d air or other tlnid to passfreely through the port 33, into the space between `he drun'i 23 and theinner wall ot' the housrEhe other vane 2?', which is now locateddian'ietrically opposite to the partition 37 is disposed radially oit'the drum Q3 with its rollers 3G guided on the portion d ot the track 13,and with one oi the rollers 32 guided on the portion CZ ot the track 17.ln this position the vane entends completely across the space betweenthe bottom of the recess and the inner wall ot the housingl 15, and anyexcess ot pressure entering` through the port will be exerted againstthe vane, and cause it to revolve with the drinn to fard the exhaustport 34. As the lrum 23 rotates forwardly, the roller 30, which istravelling along` the track portion a reaches the point whence ittravels inwardly to the point c, while the corresponding roller travelstrom the point o to the point c. luring this movement, the correspondingvane moves trom the position indicated oy the dotted lines B to thatindicated'hy the dotted lines C. ln this last position, the vane extendsacross the space hetween the drinn 23 and the inner wall of the housing15, while the other vane is approaching the position in which its roller32 rides invardly on its cam track from the pont e to the point while atthe Sametime, the corresponding roller 30 travels outw rdly trein thepoint e to the p int f. rThe arcugortions d and d of the cam tracks tendYfor somewhat more than a semi-circumference, so that each vane isprojected across the space between the drum A3 and the housing 15,he'l'ore the preceding vane is withdrawn. rl`hus, the pressure ot theiiuid is transmitted continuously and uniformly through tne vanes toactuate the power snat't 19.

ln the modification ot the invention illus traited in Figures 11, l2 and13, which is more especially adapted for steam operation, the cylinderl() is formed with a supporting hase il, and is provided at its endswith heads e2 and i3 which are tirmly secured thereto by boltslelextending longitudinally through the cylinder wall and heads,suitahle gaskets l5 being provided to prevent leakage. rlhe power shaft13 is jiournaled centrally or' the heads 42 and 43, and its hearings areprovided with suitable packing glands A drum 47 is keyed to the shaft19, and is provided with pockets 47a within whi li are mounted vanes 48,similar to the vanes 27. The drum e7, however, is provided at each endwith a Aboss 49, and the head and are each provided with corendingflanges 50 and 5l, respectively, ,i are 'formed with internal canitracks he understood that the cross sectional area so that a slightditl'erence in pressure will impart considerable force to the powershalt.

Only a small pressure, therefore, is neces sary, provided that the fluidunder pressure is supplied in sul'licient volume. lt will he apparentthat the device will operate in thev same manner in either direction,depending only upon which side has the greater pressure. A negativepressure or suction through the exhaust port will loe just as effectiveas a positive. pressure through the intake port.

lihile l have shown and described in detail the preferred constructionof the inven-Y tion, it is apparent that other modifications may he madetherein without departing from the fundamental principles,l of theinvention, and it is. therefore, my intention to include all suchmodilications within the scope et the appended claims.

What is claimed is:

1. ln a fluid motor, the combination of a cylindrical housing, a drumrotatably mounted axially of the housing Yand of smaller diameter thanthe interior of the housing and having recesses in its convex surface,vanes mounted for rotation within said recesses, retaining rings securedat the ends of the housing and holding the drum against endwisemovement, the interior of each ring forming a cam track, means securedto the ends of the vanes and riding on the respective cam tracks as thedrum rotates, said tracks being so formed as to project the vanes acrossthe space between the drum and the interior surface of the housing asthe drum rotates.

2. In a fluid motor, the combina-tion of a cylindrical housing, asubstantially cylindrical drum rotatably mounted within the housing andcoaxial therewith, said drum being of smaller diameter than the interiorsurface of the housing and having semicylindrical recesses in oppositesides thereof, vanes having shafts mounted for rotation at the centersof curvature of said recesses, retaining rings secured at the ends ofthe housing and holding the drum against endwise movement, the interiorof each ring forming a cain track, means secured to the shafts of therespective vanes and riding on the respective cam tracks as thedrumrotates, said tracks being so formed as to project the vanes acrossthe space between `the bottoms of said recesses and the interior surfaceof the housing as the drum rotates.

3. ln a fluid motor, the combination of a cylindrical housing havingheads rotatable therein, a shaft mounted axially of the heads, a drumkeyed to the shaft and securedl between the heads, said drum being ofsmaller diameter than the interior of the housing, retaining ringssecured at the ends of the housing and holding said heads and drumagainst movement longitudinally of said shaft, the interior of each ringforming a cam track, vanes journaled in said heads, and means securedt-o the ends of the vanes and riding on the respective cam tracks as thedrum rotates, said tracks being so formed as to project the vanes acrossthe space between the drum and the interior surface of the housing asthe drum rotates.

,4. In a fluid motor, the combination of a cylindrical housing having aninlet port and an exhaust port, a drum rotatable within the housing andspaced from the interior surface thereof, retaining rinos secured at theends of the housing and holding the drum against endwise movement, thein-. terior of each ring forming a cam track, vanes carried by the drum,and means secured to the ends of the vanes and riding on the respectivecam tracks as the drum rotates, said tracks being so formed as toproject and maintain the vanes across the space between the drum andinterior surface of the housing while thevanes travel between saidports.

5. ln a fluid motor, the combination of a cylindrical housing having aninlet port and taining rings secured at the ends of theA housing andholding the drum against end wise movement, t-he interior of each ringforming a cam track, vanes carried by the drum and extending from end toend thereof, and means secured to the ends of the vanes and riding onthe respective cam tracks as the drum rotates and operable to projectand maintain the vanes across the space between the drum and theinterior of the cylindrical wall while the vanes travel between saidports.

6. In a fluid motor, the combination of a rotatable drum, a cylindricalhousing coaxial with and of greater diameter than the drum andsurrounding the same, said housing having inlet and outlet portsseparatedv by a partition which extends across the space between thedrum and housing, retaining rings secured at the ends of the housing andholding the drum against endwise movement, the interior of each ringforming a cam track, said drum having recesses in opposite sidesthereof, vanes mounted in said recesses, each vane having means securedto opposite ends thereof riding on the respective cam tracks as the drumrotates, said tracks being so formed as to maintain `each vane acrossthe space between the drum and the interior of the housing during themajor part of its travel and to dispose said vane angentially of thedrum as it passes said partition, the vane when in said tangentialposition forming with the drum a continuous cylindrical surface incontact with the partition.

7. ln a fluid motor, the cylindrical housing, a drum rotatably mountedaxially of the housing and of smaller diameter than the Ainterior of thehousing and having recesses in its convex face, hafts journaled in thedrum and extending longitudinally across said recesses, vanes carried bythe shafts, retraining rings combination of a secured at the ends of thehousing and liolding the drum against endwise movement, the interior ofeach ring forming a cam track, crois heads secured to the ends of saidshafts and having rollers at their ends riding on the respective camtracks as the drum ro fates, said tracks being so formed as to projectthe vanes across the space between the drum and the interior surface ofthe housing during rotation of said drum.

S. ln a fluid motor, the combination of a cylindrical housing, asubstantially cylindrical drum rotatably mounted within the housing andcoaxial tl'iereivith, said drum being of smaller diameter than theinterior o' the housing and having' semi-cylindrical recesses inopposite sides thereof, shafts journaled in the drum and extendingloi'igitudinally across said recesses at the center oi' curvaturethereof, vanes carried by the shafts4 retaining; rings 'secured at the,nds ot' the housing and holding` the drum against la endvvise movement,the interior ot each ring; Forming a cam track, the shaft of each vanehaving` a cross head secured to each end, rollers carried at the endsoi' the cross heads and riding on the respective cam tracks to determinethe angular positions of s: varies, said tracks being` so termed as toproject the vanes across the space between the bottoms of said recessesand the interior surtace ot' the housing' as the drum rotates.

9. ln a iiuid motor, the combination ot a cylindrical housing having;lheads rotatable therein at opposite ends thereof, a shaft mountedaxially oi the heads, a drinn keyed to the shaft and secured betvveenthe heads, said druni being ot sinalier diamet r than the .interior otthe housing, shatts ournaled in said heads and having' vanes securedthereto, retaining rings secured at the ends ot the housing and holding'the drum and ieads against movement endivise ot the housing, theinterior ot each ring 'forminga cam track, eroi-is heads secured to theshafts ot said vanos and havino rollers at their ends riding on therespective cam tracks as he drum rotates, said tracks beingv Vso formedas to project the vanes across the 'space between the drum and theinterior Wall ot the housing` While the drum rotates.

l0. ln a fluid motor, the combination ot a cylindrical housing,` having`an inlet port and an exhaust port, a drum rotatable Within thel'iousingl and spaced troni the interior surface thereof, shaftsrotatably carried by the drinn, vanes secured to said shafts, retaining`rings 'secured at the ends oi the housing and holding` the drum againstendivise 1n vement, the interior ot each ringv tormi'ig a cani track,-cross heads secured to the ends ot each shaft and having` rollers attheir ends riding on the respective cam tracks, aid tracks being 'soformed as to project and maintain the vanes across the drum and interiorsurface of the housing while said vanes travel between the ports.

l1. in a iiuid motor, the combination ot a cylindrical housing,` havingan inlet port and an exhaust port through its cylindrical Wall extendingtrom endto end thereof, ai drum rotatable Within the housing 'and spacedfrom the interior surface thereof, shafts rotatably supportedrby thedrum and havingl vanes secured thereto extending from end to end of thehousing, retaining rings secured at the ends of the housingl and holdingthe orum against Yendivisc movement, the interior of each ring forming acam track, cross heads 'secured to the Yends ot each shaft and having,`rollers at their ends riding` on the respective cani tracks to determinethe position of the vanes as the drum rotates, said tracks being soformed as to project and maintain the varies across tht` space betweenthe drum and the interior ot' the cylindrical Wall While the vanestravel between said ports.

l2. In fluid motor, the combination ot a rotatable drum, a c'rlindricfalhousing coaxial With and oit greater diameter than the druniand surrounding the saine, 'said housing; having inlet and outlet portsthrough its cylindrical Wall extending from end to end thereof andseparated by a partition which extends across the space between Vthedrum and housing, said drum having substantially semi -cylindricalyrecesses in opposite sides thereof, shafts journaled in the drinn andez-:tending longitudinally of said recesses at the center otcurvaturethereof,

vanes secured to the respective shafts, re-

taining rings secured at the ends of the housing` and holding the drumagainst endwise movement, the interior of each ring form# ing` a camtrack, cross heads secured to the ends ot said sha-tts and havingvrollers at their ends riding on the respective cam tracks to determinethe position of said vanos, said tracks being so shaped as to maintaineach vane across the space between .the bottom ot the respective recessand the interior or the housing during' the major part ot its travel asthe drum rotates, and to dispose said vane tangentially of the drum asit passes said partition, the vane when in the tangential positiontorming With the drum a continuous cylindrical sur-V tace in contactWith the. partition.

in testimony, that l claim the foregoing as my own, I have heretoaffixed my signature.

THGMAS ROBERT BEGGS.

